Lamp



FIG. 1 is a side elevation view of a lamp embodying my design, the opposite side elevation view being identical;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof; and

FIG. 4 is a top plan view thereof.

The top surface of the base is flat and plain except for the switch which is semi-hemispherical. 

The ornamental design for a lamp, as shown and described. 